Ukrainian translation for general strings and Main levels.

Fix css for bottom right panel to fit a new language.

src/js/react_views/IntlHelperBarView.jsx

@@ -87,6 +87,12 @@ var IntlHelperBarView = React.createClass({
       onClick: function() {
         this.fireCommand('locale ru_RU; levels');
       }.bind(this)
+    }, {
+      text: 'Українська',
+      testID: 'ukrainian',
+      onClick: function() {
+        this.fireCommand('locale uk; levels');
+      }.bind(this)
     }, {
       icon: 'signout',
       onClick: function() {